# Campaigns

**Category:** [Engage](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/categories/engage)
**Updated:** 2026-10-04

A **campaign** is a one-shot broadcast to a segment on a channel. Pick an audience, choose a template or write the message, and send now or schedule it for later.

Campaigns support **A/B testing** (send variants and let a winner emerge) and **holdout groups** (hold back a slice so you can measure lift). Every send records delivery, open, and click outcomes so you can see exactly how a campaign performed.

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## Related Articles

- [What is Engage?](https://help.totalctrl.app/en-US/articles/engage-overview)
- [Outcomes, A/B tests & reporting](https://help.totalctrl.app/en-US/articles/engage-outcomes)
- [Journeys](https://help.totalctrl.app/en-US/articles/engage-journeys)
- [Channels, consent & opt-outs](https://help.totalctrl.app/en-US/articles/engage-channels-consent)
- [API & webhooks](https://help.totalctrl.app/en-US/articles/engage-api-webhooks)

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